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Male trapped in a colour pantrap. Body length: 6.7 mm. Face wider than long, ratio length/width: 0.87. A4=F3 length/width: 1.4. Determination following Bogusch & Straka 2012.

Gonocoxite with impression.
Pronotal projections sharp.
Face punctate.
Felt-like pubescence of middle flagellomeres not longer than half of flagellomere.
Head wider than long.
T1 and T2 with fine and strong punctures mixed.

(the following part is not clear)
T1 with relatively few punctures variable in size
gonostylus with large membranous part;
apex of gonobase on ventral side with patch of long hair
5–7 mm
crassus Thomson

T1 with numerous well-developed punctures;
gonostylus with small triangular membranous part;
apex of gonobase on ventral side with indistinct short hair
6–8 mm.
croaticus Meyer

Definitive species assignement to crassus comparing image of a male crassus antenna.